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Environmental Sciences Europe
Fig. 3 | Environmental Sciences Europe

Fig. 3

From: Methodological limitations in studies assessing the effects of environmental and socioeconomic variables on the spread of COVID-19: a systematic review

Fig. 3

Residual analysis of the linear regression models relating the transmission of SARS-CoV-2 infection and long-term exposure to NO2 in the provinces of three regions of Northern Italy (Lombardia, Venetto and Emilia Romagna), between March 8 and April 5, 2020. a Response variable: new daily SARS-CoV-2 positive cases. b Response variable: new daily SARS-CoV-2 positive cases per 100,000 habs. The data were obtained from: [25]

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